“Plans are underway to launch an offensive within weeks to retake the Syrian city of Raqqa, the de facto capital of ISIS, Defense Secretary Ash Carter said. That timing would overlap with the large Iraqi military offensive underway to push ISIS out of the northern Iraqi city of Mosul. The simultaneous offensives would put ISIS on the defensive in the two main cities it controls in Iraq and Syria.”
Source: What to Know About the Upcoming Offensive to Take Raqqa, de Facto Capital of ISIS – ABC News